Power distribution network reactive power optimization method and system considering influence of compensation capacity on position

A technology of compensating capacity and optimizing method, applied in AC network with energy trade/energy transmission authority, reactive power compensation, reactive power adjustment/elimination/compensation, etc., can solve the problem of no systematic analysis of compensation point capacity, no analysis of Problems such as the relationship with the position of the compensation point

Inactive Publication Date: 2019-12-27
国网西藏电力有限公司拉萨供电公司
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Problems solved by technology

To a certain extent, the influence of the capacity of the compensation point on the position of the compensation point has been considered, a

Method used

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  • Power distribution network reactive power optimization method and system considering influence of compensation capacity on position
  • Power distribution network reactive power optimization method and system considering influence of compensation capacity on position
  • Power distribution network reactive power optimization method and system considering influence of compensation capacity on position

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Embodiment 1

[0068] Example 1, such as image 3 In the 85-node power distribution system shown in a certain city, the voltage of the root node is 10kV, and a group of capacitors with a capacity of 50kvar has been connected in parallel to node 5. The planning period is 20 years. Considering the difference in electricity prices between industrial and civil use, the electricity price is assumed to be 0.85 yuan / kWh, the discount rate is 0.01, the capacity of a single set of medium-voltage capacitors to be compensated is 50kvar, and the price is 12,000 yuan / set.

[0069] For the above distribution network, with the annual economic benefit of formula (1) as the optimization target, after the overall algorithm in Section 2.4 and the existing method I (Zhang Tingchang, Geng Guangfei. Reactive power optimization of medium voltage distribution network based on improved particle swarm optimization algorithm . Power Grid Technology, 2012, 36(12): 158-162) and the existing method II (Gao Huimin, Zhang ...

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Abstract

The invention provides a power distribution network reactive power optimization method and system considering influence of the compensation capacity on the position. The method is characterized in that the number of reactive compensation points, the number of maximum compensation points and the maximum annual economic benefit value are initialized and set; compensation positions of compensation points meeting the set number of reactive compensation points are determined, calculating annual economic benefit after reactive compensation is carried out at the positions, if the annual economic benefit exceeds a set maximum annual economic benefit value at the moment, the maximum annual economic benefit value is updated; one is added to the number of the reactive compensation points, whether thenumber of the reactive compensation points at the moment is the optimal number of the reactive compensation points or not is determined, if yes, the optimal number and the capacity of the reactive compensation points at the moment are outputted, otherwise, the process returns to the step of determining the compensation positions of the compensation points meeting the set number of the reactive compensation points again, circulating is performed, and lastly, a final reactive compensation scheme is determined.

Description

technical field [0001] The disclosure belongs to the technical field of reactive power optimization of distribution network, and relates to a method and system for reactive power optimization of distribution network considering the influence of compensation capacity on position. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] At present, in my country's 10kV power distribution network, reactive power compensation devices are generally only installed on the special transformer side, but there are not many public transformers, which makes the reactive power compensation degree of the distribution network not high, resulting in a large number of reactive power Power flows in the line, increasing line loss, reducing node voltage, and affecting power supply quality. Therefore, it is of great practical significance to study parallel reactive p...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCH02J3/008H02J3/1871Y02E40/30
Inventor 陶魁达娃伦珠尼平巴桑顿珠普穷穷董智华苏延香陶晓莉唐书章白玛康卓潘志远
Owner 国网西藏电力有限公司拉萨供电公司
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